I'm curious to see how this will pan out in London. When I was there in 2004 I rode around the city and found it a bit more precarious than NYC partly because I wasn't as familiar with the area and also because motorists there seemed a bit more impatient sharing the road than here. Richmond Park was fun to ride through and most of the main avenues are ok during the non rush hour times, but I'm sure that's true in every major city.
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